Scale weight totalizing device



Sept. 16, 1952 E. w. SCHELLENTRAGER 2,610,843

SCALE WEIGHT TOTALIZING DEVICE Filed Aug. 28, 1948 5 Sheets-Sheet l FIG-I FIG-4 INVENTOR EUGENE W SCHELLENTRAGER BY $4,71 W ym A'T TORNEYS Sept. 16, 1952 w. SCHELLENTRAGER 2,610,843

SCALE WEIGHT TOTALIZING DEVICE Filed Aug. 28, 1948 3 Sheets-Sheet 2 INVENTOR FIG EUGENE w. SCHELLENTRPGER ATTORNEYS p 1952 E. w. SCHELLENTRAGER 2,61

SCALE WEIGHT TOTALIZING DEVICE Filed Aug. 28, 1948 3 Sheets-Sheet 5 m 3 ['TEF'] 1 Ii 0 ."1 C F F F C F R F 9/ F K F F C 9/] 59a H6 n7 59b F & |2| 124 L Y I Q ll5a us In no n2 n4 ns'a 58 V/ V H I23 I22 us NE w SCHELLENTRAGER FIG 8 ATTORNEYS Patented Sept. 16, 1952 SCALE WEIGHT TOTALIZIN G DEVICE Eugene W. Schellentrager, Shaker Heights, Ohio, assignor to The Atlas Bolt & Screw Company, Cleveland, Ohio, a corporation of Ohio Application August 28, 1948, Serial No. 46,637

7 Claims.

The invention relates to novel and improved weight recording, identifying, and totalizing means for registering, indicating, and individually totalizing the weights of successive charges of materials delivered to a container of either stationary or movable type.

While my invention is adaptable to a variety of uses in the industrial field, it will be de scribed with relation to the charging of a blast furnace. As is well known to those skilled in metallurgical arts, predetermined charges of raw materials such as coke, limestone, iron ore, etc., are conveyed from a receiving zone to the skip hoist of the furnace, which elevates the material and dumps it into a hopper at the furnace top. The molten iron is tapped ofi near the bottom. The process is a continuous one, over relatively extended periods, and as the charged material settles to the molten zone, fresh charges are periodically added.

It is necessary that the amounts of the several ingredients be carefully predetermined in the light of various operating factors, and the weight and character of each charge should therefore be controlled and recorded, preferably in such manner as to eliminate the personal equation comprising the fallibility of unskilled operators.

In U. S. Patent No. 1,909,724, granted to me on May 16, 1933, there is dis-closed improved mechanism which not only indicates the amount of each individual charge delivered from a charging source to a conveyor, but also automatically records such weight, and, by means of identifiable characters, establishes the individual identity of each ingredient of the charge in conjunction with its individual weight.

Since the development of the invention covered by my said prior patent, the need has arisen for an automatic means which indicates and records the weight of each ingredient comprising a total charge, and in addition is capable of automatically segregating and totalizing the amount of each single ingredient added during a working period which comprises a plurality of successive charges, such as for example the total amount of iron ore, and/or coke, and/or limestone added to a continuously operating blast furnace within a 24 hour operating period.

An object of the present invention, therefore,

is to provide novel and improved scale means which identifies and individually records the Weight of each ingredient added to a charge, and which totalizes the Weight of each individual ingredient over a succession of charges in a continuous time period.

Other objects and advantages will be apparent from a study of the following specification, in conjunction with the accompanying drawings, in which Fig. 1 is a conventional side elevational view of a traveling dump car which supplies the skip hoist of a blast furnace;

Fig. 2 is a vertical sectional view, somewhat enlarged, of a portion of the weight indicating, recording and totalizing means shown in side elevation in Fig. 1;

Fig. 3 is a view similar to Fig. 2 but showing a somewhat modified embodiment of the apparatus; 1

Fig. 4 is a fragmentary elevational view as seen from the left in Fig. 3;

Fig. 5 is a top plan view of a bank of totalizers, with ancillary operating means, responsive to operation of the apparatus shown in Figs. 2 or 3;

Figs. 6 and 7 are, respectively, left and right end elevational views of the totalizer bank shown in Fig. 5;

Fig. 8 is a vertical sectional view, somewhat enlarged, taken on the line 88 of Fig. 5;

Fig. 9 is a schematic and diagrammatic showing of the essential elements of the present invention.

As previously mentioned, the invention is shown as applied to a dumping railway car such as is used in conveying raw materials to a blast furnace hoist. The indicating, recording, and totalizing devices are carried on the car which is also provided with electrical motive and operating means under the control of an operator who rides the car.

The car shuttles on a track between a plurality of loading positions and a delivery position. A plurality of bins, or car loading chutes, occupy the respective loading positions. Starting from the bin most remote from the delivery position the car receives successive loads of ingredients at the respectively successive bins. As will appear, the increments of increasing car load are automatically recorded and identified when charged into the car, and as part of the same operation the individual weight of each ingredient is accumulated on a respectively individual totalizer, a bank of such totalizers being carried on the car. At the end of a day, or a week, or any desired period, the total appearing on each totalizer may be examined and copied, and if desired the totalizers may then be reset to zero to begin a new period.

As part of the means whereby these ends are accomplished, I show paired sets of Selsyn motors disposed and connected-as will, hereinafter more specifically appear. A Selsyn (or selfsynchronous) couple consists of two paired motors, the armatures of which are electrically cou--,

pled in such manner that when the armature,

of one (then known as the transmitter) is turned through any desired ang1e,.-ti:e armatureaofithe other (then known as thereceiver) automatically follows suit in the same direction "and through exactly the same angular -.-exte nt. -If. the coupling between the pair of Selsyns is completed after one has been turned, the o-ther w'ill instantly turn to the same angular position.

- ..-In:.my;prior VU. S. .Patent No. 1,909,724 above reterredc to, I: idiseiosesthe :use ,-of ia.--r,espective Selsyn: transmitter gassociated 'with-veach .;.ma-terialtibim; and. successively connectible, I with ":a single receiving; Selsyn' during r charging of the car from each such bin, gin: such manner; that they-receiving-.Selsyrr, ,causes ,identificationof' the chargejirom eachnbin 33S the-weight v;of- "Such charge is, automaticallyrecorded. This/operation will be briefly reviewed hereinbelow in conjunction-with; the; novel-and: improved, zautomaticiiotalizennowioereinto befiisclosed.

In Operating under the present'invention, I: use two; distinct :v Selsynecontrolled :pperations, but both :intenrelatedyto;accomplish:the "final result.

IIn one-.operation whereby individual-:charge weights are identified and totalized',-', I' use=paired Selsynsiherein sometimesgtermedlfor convenience the materialeidentiiyingiiSjelsyns. In this system a Selsyn transmitter is disposed adjacentweach charging .point,; and a; common; Selsyn receiver, connectible to each such transmittenin:turn,; opcrates a; rota-tableotype'swheel carrying, spaced thereon, identifying;characteristicsadapted tobe recorded oniaa; traveling paper; strip .or other means, so that as the car stops by a chargin point, .the; type wheel: identifies :the stoppingpoint Orr-the "strip; ':While. the system so fartdescribed in this paragraph has previously been disclosed inzmy ;prior:U.-'S. .Ratent Number-1,9097% heretofore; mentioned Lhaye now provided novel: and improved.a-dditional' features,oas:follows.

I havezprovidedza:bank-of mechanicalcounters of the numerically progressing or accumulating type,;;ea:ch= counter being. adapted to accumulate a :totalof successive charges-of. a single ingredient. The'gcounters; aree drivenrby a mainshaft, or .bya single drivermeans; which energizes; two or. more suchrshaftst-simultaneously, the-shaft or shafts being-responsive toithe: IOtQtiOILOf: a. Selsy-n receiuenywhiclr in 'turn-responds to 1 a- Selsyn transmitter, this present Selsyn couple being'herein sometimes. identifiable as the weight-registering Selsyns. .-;Each counter is-coupl-edsto.its drivingshaf-tthrough. anindividual clutch. arrangement, and the clutches arexnormally: disengaged. -As the-.oar receives-a load;-for;instance: of coke, the welght registering Selsyn transmitter rotates, and with it 1 the weighteregisteringe Selsyn; receiver;and;al1-;counter -drivingshafts. Aswill im- :leverage system 2.3.

4 mediately appear, however, only one clutch has been energized, and only one counter, in the present instance the coke counter, turns to total the weight of coke just added.

Associated with the shaft of the type wheel, which turns responsive to the material-identifying Selsyn receiver as above noted, is a traveling contact means adapted to select and complete a circuit to the proper clutch, as mentioned in the last paragraph. This contact means closes only one circuit to one clutch, and therefore only one counter registers the weight added at one charg ingrstation. 2i

While the system is completely automatic and fool proof as just described, manual control may be substituted for the clutch. selecting contact arm,as;will-appear.

"Referring now to the drawings, and first to ;Eig; 1", the ztravelingdump car 2% shuttles on track 21,- and in'the lillustrated embodiment, it carries two hoppers ZQ-Which rest on a weight-responsive The leverage system is operatively connected to a shaft 2 (Fig. 2) rotatable in a housing carried on one end of the car. Shaft 24 has affixed thereto near one end a pointer 26 which; swings inrregistry'with. scale indicia. on agdial: 27: whereby EDQODBZZJZOI'? may visually observe-the total,car;wei'ght after anyv charge. Near the other'endpf: shaftZ iis-a disk-2 8;termedfor conveniencefa'type wheel, which carrieson its periphery a series of figures corresponding tothera-nge of weight-ofthe loads tobe handled. Adj acent' the-topof the; type wheel; is a hammer zsiarranged to be, actuated towards the-type wheel by means.ofanarmature fil uponener izationpf; a; solenoid". .Thegftypew wheel turns ewith shaft 214: and pointers -28 -'so ::.that thexweig-ht indicating number ornthe type wheel. periphery-always c0r responds-.-.with-thetotal carload. A rollof paper record: strip 1S. continuously.advanceable .between the hammer. and. the type-wheel periphery vby suitable. feeding mechanism. After the-discharge of? each-incrementof load :into the. carthe solenoid 33 :is energized, aswill appear; the hammer strikes the paper strip against the-type. wheel; and a wei ht record is made on'thestrip.

The: carv is. movable along track 2-! pasta successionof charging -bins 35a, 35b, etc. (Fig. 9), each arranged to discharge into-the. car, and controllable manually .or' otherwise; by the operator who. can-walk along thecar runway 86. Adjacent the operator ashe.-operates-;the bindischargecontrol is a button 37 with which he energizes solenoid-33' to cause; an operation on the weight recording-stripes previously described. The, caris power-driven by means not shown; but morefully described in my U. 5. Patent No. 1,909,724.

Means for: identifying the. discharge from each bin, and recording theidentification willnow be described; Since. suchdescription is necessary for athorough. understanding of. thetotalizing aidparatus. I v

Immediately adjacent the weight-type wheel .28 is. mounted an identifying type wheel. 4G, whose. periphery bears, a plurality of. indicia-corresponding respectively to thevarious materials in the bins,;for example "C -for cole, L,. for limestone, etc. Anyone of these indicia is respectively reg istrable on the; paper strip adjacent the weight as the hammer- 129 operates. Each loinhas-assoelated-therewith its individual Selsyn; transmitter 53a, 43b, (wanted,- etc. (Fig.9) operatively-associatable in turn-with-a Selsyn receiver 49 on the shaitof identifying wheel figas'will later appear from. a description of the wiringarrangement,

Each individual Selsyn transmitter armature 43a, etc., is presentv at its own distinctive position, so that movement of the car from one position to the next causes Selsyn receiver 49 to turn wheel 40 to a respectively corresponding distinctive position so that the weight and character of each increment of load is recorded, in juxtaposition, on the paper record strip. This is the identifying Selsyn system previously mentioned.

The totalizing system, responsive to the apparatus just described, will now be disclosed in detail, reference being had at first to Figs. 5, 6 and 7.

A bank of counters 53a, 53b, 530, etc., is assembled on a base 54 which is carried in a housing 55 on the car. All counters operate similarly, and only the operation of counters 53a and 53b will be described. Counter 53a is directly coupled by a pinion 56 to a ring gear 51 which is energized from shaft 58 through a normally disengaged electric clutch 59a. Counter.

53b is similarly coupled through pinion 60, and ring gear 63 to a clutch 59b. Shaft 58 is responsive to the rotation of Selsyn receiver 64 which is coupled to Selsyn transmitter 65 (Fig. 2) on weight responsive shaft 24. Summarizing this phase of the operation, any load dumped into the car rotates shaft 24 and the armature of Selsyn transmitter 65, and, responsive thereto, Selsyn receiver 64 causes rotation of shaft 58 through gears 66 and 61. If the proper clutch, for example clutch 59a, has been energized, counter 53a will register the weight just dumped in the car. This is controlled as follows.

A fixed contact disk M (Fig. 9) is disposed adjacent to and coaxial with type wheel 48,.

and carries a plurality of switch contacts 68,

power for the car, by circuit means not shown. Since the Selsyn system requires A. C. power a motor generator set 85 is energized from L1, L2,

through conductors 86 and 81, and A. C. is developed and supplied through conductors 98 and 89, the latter being grounded. As may be: noted, all Selsyns have one A. C. ground con-' so that when the car stops by any bin, only that bins transmitter is in circuit with Selsyn 69, '10 etc., which are adapted to be wiped in.

succession by a rotatable wiper arm 13 rotating with the type wheel 40. As will appear, as the type wheel 40 registers the coke position. wiper arm I3 closes the contacts to the coke circuit which includes a clutch 59a. Clutch 59a is engaged putting shaft 58 in direct drive relationship with counter 53a, the coke counter. As soon as the coke load is dumped into the car, shaft 24 turns and with it pointer 26, weight type wheel 28, and Selsyn transmitter 65.. As heretofore described, the operator thereafter presses button 31, Selsyn receiver 64 turns, and since clutch 59a is energized, the coke load is accumulated on counter 53a.

Referring further to Figs. 5, 6 and '7, Selsyn receiver 64 also operates shaft I5, throughits ring gear 66 and a pinion I6 on the end of shaft I5. Another group of counters, each with its respective clutch control, is associated with shaft I5. Only one driving shaft would have been sufficient, but the provision of two shafts permits shortening of the overall length of the assembly.

A conventional arrangement is shown for returning all counters to zero at the end of any desired computing period. Briefly, it comprises three shafts 'I'Ia, 111), 110 having levers 18a, 18b, 18c fixed to respective ends of the shafts. All three levers are pivotally attached to a rocker link I9. Each counter is operatively engageable with one of the shafts, and referring to counter 53a, such engagement is effected through gears 83 and 84. When it is desired to clear all counters to zero, link I9 is rocked for example by a lever 19a to produce the desired effect.

Referring tothe schematic wiring diagram of Fig. 9, lines L1 and L2 constitute a D. C. power supply which may be used to supply driving receiver 49 of the material-identifying system. Selsyns 64 and 65 of the weight transmitting system, being both on the car, have their armatures directly connected through leads 96, 91,

and 98, but the field connection to Selsynreceiver 64 is broken at switch 31 in conductor I09 (from A. C. main lead 88) to prevent response of the counter drive until after a load'has been discharged, and the proper clutch has been energized. Closing of switch 31 also energizes solenoid '33 to operate hammer 29 as heretofore mentioned. A circuit to a particular clutch proceeds, for example, from A. C. line 88 through' continuous ring I63, arm I3, line I04, coil II3 of clutch 59a and line I05 to ground.

Fig. 3 shows a somewhat modified clutch control in which manually rotatable means I06 turns the contact arm Illfia to identify the bin from.-

which the charge is being received, thereby clos-' ing the circuit to the proper clutch and eliminating Selsyns 43 and 490i the prior embodiment, since such manual operation also turns the type Wheel 40a. This system is not preferred since it introduces the possibility of operator error.

In referring to the counter bank arrangement shown in Fig. 5, I have spoken, for example, of

construction and operation of the clutch device.- Shaft 58 has attached thereto a member H0,-

U-shaped in cross section, having parallel disk portions III and H2 which, of course, rotate with the shaft. Opposed ring shaped magnet coils I I3 and H4 are fixed with respect to the base H5, the shaft 58 rotating in bearings I I5a within the magnet coil supports. A pair of sleeves I I6 and H1 are rotatable, respectively, around and concentric with the fixed magnet coil supports. Previously mentioned ring gears 51 and 63 are fixed to sleeves H6 and Ill.

Between disks III and H2 are a pair of spaced armature disks H8 and II 9. Armature H8 is adapted to be attracted towards disk III when magnet H3 is energized, but is normally urged into contact with a fixed, centrally disposed brake disk I26 by springs I2I. Armature H9 is similarly inwardly biased by springs I 22. Armatures H8 and H9 are disposed to rotate respectively with sleeves H6 and II I, being loosely pinned thereto by pin and socket arrangements I23 and I24.

ThQEODEI'atiOIIEiS asfollows. Magnets. H3 and; I I4 :.-1are :normally-de-energized and .movable are matures' -I lBandIIQamspring biased to contact withufixed brake I 29: As a result sleeves I I6 and EI I areheld immovable,,-and so, of course, are ring ears ;51 and, 63.x The two counters associated ,witlr-thering gears do. not movereven if shaft 581s rotated by Selsyn receiver 64 (Fig. 5).

Assume that magnet coil H3 is. energized. Armature. IIB is attracted to-contact with disk III. If now shaft-58 rotates, and disk, I I I rotates with it; sleeveI l6 and ring-gear 51 alsorotate, causingeoperation of counter 53a.

Similarly, energization of magnet coil I I4 would. placegsleeveal l1, ringgear B3, and counter 53b.

indriving association with shaft 58.

Themainxadvantageous feature of thisarrangementris the. provision of a fixed system of magnet coils andarotatable armature. Inpreviousmagneticclutch structuresthe. coils were rotatable, thereby requiring commutators,.etc., to. complete theielectrical circuits.

.At1the option of the user, the devices-just described. are adapted to include an overall totaliz ing 1 counter which registers the total weight dumped into the blast furnace or other chargereceiving receptacle over any given interval;

gearing ismerely to permit the use of a counter identical in all respects with th others in the assembly,but adapted to show numerical forward progression when thedrive shaft l5is traveling in reversed direction responsive to Selsyn, receiver 64. I

The operation of' the overall total weight counter will be obvious from what has already been said. As the car advances from one charge receiving position to another, the respective individual counters. accumulate individual charge weights although the scal pointer and type disk show-total weights for the .car load. When the car moves to the dumping position, clutch, 59h puts counter 53h in driven relationship with drive shaft I5 and Selsyn 84. When the car is dumped, scale-shaft 24 reverses, Selsyn 65 turns backward with the shaft, Selsyn 54 turns drive shaft 5 backwards, and counter 53h, by reason of its reverse gearing, turns forwardly to show the total weight being dumped. This overall totalizing counter means continues to accumulate total weight dumped from the car until such time as all counters are cleared as heretofore described. While the apparatus herein disclosed has been described with special reference to a system wherein a movable dump car moves past a plu-- rality of charging points, it is apparent that the advantageous features of the inventioncan be utilized to good purpose in a fixed scale installation on'which successive loads of the same or dii f e'rent ingredients are weighed.

What I claim is:

1. In a material receiving and conveying system wherein a car is movable along a way between a plurality of car. chargingpositionsandia car. discharging position, and Where loading means is'provided at each such car charging position for loading a respective plurality of. differentingredients into the car, in combination, an ingredient identifying member rotatable to a plurality of indexed points corresponding to respective charging positions, weight indicating means rotatable responsive to change in car weight at any loading position, and disposed adjacent said ingredient identifying member, and individual ingredient weight totalizing means comprising a plurality of independent weight counters, driving means for said weight-counters, each such counter having a normally disengaged clutch adapted to couple-it to said driving means, a

totalizing Selsyn transmitter coupled to said weight indicating means, a totalizingSelsyn receiver coupled to said driving means and to said totalizing Selsyn transmitter, whereby movement ofsaid weight indicating means produces corresponding movement of said driving means, each said clutch being responsive only to position'of said identifyingmember in one said indexed point, whereby driving movement of said driving;

means is efiective only upon one n said clutch and upon its respective counter.

2. In a material receiving and conveyingsys-J tem-wherein a car is movable along a way between a plurality of car charging positions and a car discharging position, and where loading means is provided at each such car charging position for loading a respective plurality of different ingredients into the car, in combination, an ingredient identifying member rotatable to a plurality of indexed points corresponding to respective charging positions, weight indicating means rotatable responsive to a change in car weight at any loading position, and disposed adacent said ingredient identifying member, and

individual ingredient weight totalizing means comprising a plurality of independent weight counters, driving means for said Weight counters, each such counter having a normally disengaged clutch adapted to couple it to said driving means, a totalizing Selsyn transmitter coupled to said weight indicating means, a totalizing Selsyn receiver coupled to said driving means and to said totalizing Selsyn transmitter, whereby movement of said weight indicating means produces corresponding movement of said driving means, each said clutch beingresponsive only to position of said identifying member in one said indexed point, whereby driving movement of said driving means is eifective only upon one'said clutch and upon its respective counter, and means for rendermg eflective the coupling between said Selsyn transmitter and said Selsyn receiver only afterenergization of a clutch responsive to an indexed position of said identifying member.

3. In a material receiving and conveying sys-' tem wherein a car is movable along a way between a plurality of car charging positions and a car discharging position, and where loading ,means is provided at each such car charging position for loading a respective plurality of differentungredients into the car, in combination, ingredient identifying means comprising an identifying Selsyn receiver on said car, diiferentlyindexed 'Selsyn transmitters one adjacent to each loading position, an ingredient identifying mem-- 'ber rotatable to a plurality of indexed points ,c'orresponding to respective charging positions, said member, being movable responsive to said iden-.

tifying 'Selsyn, receiver, electric. circuit means:

acid-s43 'i'e'sponsive to car position providing an operative connection between a respective one of said identifying Selsyn transmitters and'said identifying Selsyn receiver, weight indicating means rotatable responsive to changein car weight at any loading position and disposed adjacent said ingredient identifying member, and individual ingredient weight totalizing means comprising a plurality of independent weight counters, driving means fcr said weight counters, each such counter having--a-normally disengaged clutch adapted to couple it to said driving means, a totalizing Selsyn transmitter coupled to said weight indicating means, a totalizing Selsyn receiver coupled to said driving means and to said totalizing Selsyn transmitter, whereby movement of said weight indicating means produces corresponding movement of said driving means, each said clutch being responsive only to position of said identifying member in one said indexed point whereby driving movement of said driving means is effective only upon one said clutch and its respective counter.

4.. In a material receiving and conveying system wherein a car is movable along a way between a plurality of car charging positions and a car discharging position, and where loading means is provided at each such car charging position for loading a respective plurality of different ingredients into the car, in combination, ingredient identifying means comprising an identifying Selsyn receiver on said car, difierently indexed Selsyn transmitters one adjacent to each loading position, an ingredient identifying member rotatable to, a plurality of indexed points corresponding to respective charging positions, said member being movable responsive to said identifying Selsyn receiver, electric circuit means responsive to car position providing an operative connection between a respective one of said identifying Selsyn transmitters and said identifying Selsyn receiver, weight indicating means rotatable responsive to change in car weight at any loading position and disposed adjacent said ingredient identifying member, and individual ingredient weight totalizing means comprising a plurality of independent weight counters, driving means for said weight counters, each such counter having a normally disengaged clutch adapted to couple it to said driving means, a totalizing Selsyn transmitter coupled to said weight indicating means, a totalizing Selsyn receiver coupled to said driving means and to said totalizing Selsyn transmitter, whereby movement of said weight indicating means produces corresponding movement of said driving means, each said clutch being responsive only to position of said identifying member in one said indexed point, whereby driving movement of said driving means is effective only upon one said clutch and its respective counter, and means for rendering eifective the coupling between said totalizing Selsyn transmitter and said totalizing Selsyn receiver only after energization of a clutch responsive to an indexed position of said identifying member.

5. In a material receiving and conveying system wherein a car is movable along a way between a plurality of car charging positions and a car discharging position, and where loading means is provided at each such car charging position for loading a respective plurality of different ingredients into the car, in combination, weight indicating means rotatable responsive to hange in car weight at any loading position,

, said totalizing 10 individual ingredient weight totalizing means comprising a plurality of independent weight counters, driving means for said weight counters, each'such counter having a normally disengaged clutch adapted to couple it to said driving means, a totalizing Selsyn transmitter coupled to said weight indicating means, a totalizing Selsyn receiver coupled to said driving means and to Selsyn transmitter, whereby movement of said Weight indicating means produces corresponding movement of said driving means,- an ingredient identifying member rotatable to a plurality of indexedpoints corresponding to respective charging positions, a plurality of switches respectively corresponding to each such indexed point, a plurality of electric circuit means, each such circuit including one said switch and being efiective upon one said clutch, a contact arm operatively coupled with said ingredient identifying member to rotate therewith and effective to close a corresponding circuit and energize a clutch when said ingredient identifying member stops in an indexed position, whereby, upon energization of said last named clutch, a single counter is placed in operative association with the driving means and with the identifying means so as to tctalize the weight of an identified ingredient charged into the car.

6. Material receiving and weighing apparatus adapted to respond to, indicate, and totalize the weights of successively received charges of different ingredients, comprising, in combination, ingredient identifying means movable to a plurality of registry points corresponding to a respective plurality of receivable ingredients, means for indicating the weight of each said ingredient so received, and ingredient weight totalizing means comprising a plurality of operationally independent Weight counters, driving means for said weight counters, each such counter having a normally disengaged clutch adapted to couple it to said driving means, a totalizing Selsyn transmitter coupled to said weight indicating means, a totalizing Selsyn receiver coupled to said driving means and to said totalizing Selsyn transmitter, whereby movement of said weight indicating means produces corresponding movement of said driving means, each said clutch being responsive only to position of said identifying member in one said registry point, whereby driving movement of said driving means is effective at one time only upon one said clutch and upon its respective counter, and means for rendering effective the coupling between said Selsyn transmitter and said Selsyn receiver only after energization of a clutch responsive to a registry position of said identifying means.

7. In a material receiving and conveying system wherein a car is movable along a way between a plurality of car charging positions and a car discharging position, and where loading means is provided at each such car charging position for loading a respective plurality of different ingredients into the car, in combination, ingredient identifying means movable to a plurality of registry points corresponding to a respective plurality of car charging positions, ingredient weighing means including a part movable in proportional response to respective ingredient weights, ingredient weight totalizing means comprising a plurality of operationally independent Weight counters, one respectively for each ingredient, and means comprising a Selsyn motor couple, mechanical linkage uniting the first member of said member moves responsive to; movement-"of said inov'able part, a rotatable shaft, individual clutch means for each counter. and adapted tovt ransmit actuating, movement from said shaft to said counter whenits' respective clutch is operated, mechanical linkage uniting said shaft with the secondinember of said couple, and individual electric circuitv means for each clutch, each such circuit heing'jciosed during registry of the car with a 10 respective charging position, whereby, at such registry, a respective clutch is energized to per-,

mm; actuation of one such counter by theaijore saidshaft movement.

E N cfismme-cm 12 REFERENCES; CITED 2 The following. references are: of record: in; the

file of this. patent:

UNITED STATES PA'IENTS;

Number Name Date 1 1,744,232 Lenton -V Jan. 21, 1930 1,909,724 Schellentrager- May 16 1933; 2,199,010 RO b,'--.---.---,- Apr. 30,1940 2,208,284 VVeckerly Ju1y 16, 19 40 Hadley Nov,- 10,1942. 

